CVE-2026-34327: Microsoft Partner Center

High severity, CVSS 8.2. EPSS: 0.6% chance of exploitation in the next 30 days.

Externally controlled reference to a resource in another sphere in Microsoft Partner Center allows an unauthorized attacker to perform spoofing over a network.

Affected products

• Microsoft Partner Center: affected versions not specified

Published 2026-05-07. Last modified 2026-06-17.